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【简答题】

阅读下列短文:
温室效应
随着工业生产的发展和人类生活水平的提高,煤、石油、天然气等矿物燃料的需求量不断增大,它们燃烧后放出大量二氧化碳气体,加之人为的乱砍滥伐,能吸收二氧化碳的大片森林不断消失.因此,每年都有大量的二氧化碳进入大气、大气中二氧化碳含量增大.在地球地大气层中,二氧化碳等气体像温室的玻璃那样起保温作用,导致大气温度不断升高,这就是所谓的“温室效应”.
由于温度持续上升,会使更多的水蒸气进入大气,加速了土地的沙漠化;又由于温度上升,极地冰雪将融化,造成海平面上升,淹没沿海地区.因此,“温室效应”给人类赖以生存的地球造成极大的破坏.
根据上述短文,回答下列问题:为了保护人类赖以生存的地球,应该采取措施防止“温室效应”的进一步发展,可采取的措施______.

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【单选题】地球温度的保持得益于薄薄的大气层,当太阳光射向地球时,大气层吸收其中大量的红外线以及波长较短的紫外线,它们都会使气温升高,从而在向外太空辐射出一部分红外线时也向地面发出红外线,而未被大气吸收的其他太阳光射向地面时,引起地面温度上升,地表温度上升时也会向大气散发出红外线,大气吸收后,一部分通过大气逆辐射返还给地球,一部分消失至太空。这样地面温度、大气温度就能够保持在一个相对恒定的数值范围之内,月球就...

A.
大气热量的来源包括:太阳辐射、地面辐射以及大气逆辐射。这些都使大气的温度能够升高
B.
如果大气辐射增加,大气的温度会因此而升高,地面的温度也会因此而上升
C.
大气辐射和大气逆辐射本质上一样,只是由于热量来源不同,辐射后的红外线走向不一样而已
D.
红外线的吸收是引起温度上升的主要原因,月球上因为缺乏像金星一样富含二氧化碳的大气层,所以即使在最高温度时,也没有金星的温度高

【简答题】如图所示,一根竖直的弹簧支持着一倒立气缸的活塞,使气缸悬空而静止,设活塞与缸壁间无摩擦且可以在缸内自由移动,缸壁导热性能良好使缸内气体总能与外界大气温度相同,则下述结论中正确的是(  )

A.
若外界大气压增大,则弹簧将压缩一些
B.
若外界大气压增大,则气缸上底面距地面的高度将减小
C.
若气温升高,则气缸上底面距地面的高度将减小
D.
若气温升高,则气缸上底面距地面的高度将增大

【单选题】All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil ...

A.
All over Europe, and in North America, there’re lakes and forests which are dead or (71) and the (72) is thought to be acid rain. What is acid rain Mr. Justin Cook, a scientist, explains: "All fossil fuels, (矿物燃料),that (73) oil, coal and gas, contain sulphur. When these are burnt, for example (74) motor vehicles, they form sulphuric acid (硫酸)This (75) UP into the air, and soon it falls back to (76) , into lakes and (77) trees in forests." This can cause many local problems. 78 a result, lakes become acidic, fish disappear and trees are killed. The pollution is carried great distances by the wind, so sulphuric acid (79) in Britain can travel as far as Scandinavia (斯堪的纳维亚). Czech is one of the countries with the most acid rains and large areas of (80) consist only (81) dead trees.
B.
Is there (82) that can be done about acid rain Mr. cook says: "The rain (83) of acid rain is (84) power stations to install filters that (85) the acid getting out into the air. Here in Britain, the only (86) that has been taken is that the chimneys are built (87) so that the pollution is more distributed." If the petrol used in motor vehicles (88) lead--free, then it Would be possible to filter exhaust fuses (废气) which are a (89) cause of pollution. But these filter mechanisms (机械装置)can not work (90) the leads is removed.